When performing lip fillers, we must always consider the side view of the lips.
If the patient wants a natural result, the profile must stay natural, avoiding too much projection in the upper lip ie a ducky appearance.
The upper lip, lower lip, nose and chin must have a suitable relationship to each other.
Here we have a case where the patient wanted a subtle and antiageing result, see results above and below.
Above is a case where the patient needed increased projection for a more beautiful profile.
See the other view below, where the vermilion border has been more everted, creating a younger and prettier angle